Note: Descriptions are shown in the official language in which they were submitted.
1~4~68
It is known to provide container closures such as
sealing caps for bottles with a plastic insert comprising
a central projection in the shape of a solid cylinder. The
insert of a Crown Cork has previously been provided with a
central projection turning away from the bottle and being
secured to the central portion of the metallic cap of the
Crown Cork. In this manner the projection of the insert
increases the capability of the central portion of
withstanding the pressure in the bottle.
The object of the present invention is to permit a
new and further use of an insert comprising a projection, when
the Crown Cork has been detached from the container and the
insert removed from the metallic cap.
According to the present invention, there is provided
a bottle cap including a dished metallic cap having means for
receiving the mouth of a bottle and including a seal
comprising a plastic insert having a base removably received
and captured in the metallic cap with one side in substantial
abutment therewith. A projection extends from the other
side of the base and means is provided on the projection
for receiving a fastener so that the insert may be removed
from the metallic and fastened by the projectlon to another
object.
The means may be a hole for catching and cooperating
with the pin point of a separate pin tool to penetrate the
projection for fixing purposes. This renders it possible
to use the insert as trimming by sewing it on or securing
it to a blouse by means of a safety pin stuck through the
projection. A drawing pin may also be stuck through the
blouse or shirt and into the end portion of the projection
of the insert. The insert may thus be used as a button in
~ r.~ 1 ~
~148968
the blouse.
Children and young people may use such buttons
as trimmings, which look well on a blouse or a shirt with
their various colours and imprints, and e.g. arranged in
a pattern.
The insert may also be used as a distinctive mark
or a participant's emblem, ancF, when provided with a sign
or some information, the insert may thus indicate that the
wearer belongs to a certain group of persons.
As to re-use the insert may serve as a collector's
item. In this connection it is advantageous that the
collector may display on his shirt the emblems he wants to
have exchanged. In this manner the manufacturer of the
inserts of the container obtains a certain advertisement.
In order to facilitate the arrangement of the plastic
insert as a trimming on a blouse or a shirt the projection
may according to the invention be provided with a through
hole for receiving an cooperating with a separate securing
means, such as e.g. the drawing pin or safety pin. As
described below, a ring, a thread, a nail or a thin stick
may, however, also be used as securing means.
According to one embodiment of the invention of the
plastic insert according to the invention the hole may be
as narrow as a pinhole. Thus the insert or the cap used
as a trimming can be secured to the fabric by means of a
needle carried through the hole, thus preventing the button
from hanging loosely down.
The hole may be cast, but in general it is preferred
to form the hole after the casting, either before or after
the subject has left the mould.
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1~48~68
Whether the hole is stuck or drilled it would
facilitate its manufacture if according to the invention
the hole is made in a planar side wall of the projec-tion.
According to an embodiment of the invention the
hole may furthermore be
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1~48968
located on the projection where the latter is formed as a la-
mella and has a thickness of the same magnitude as the other
parts of the insert, the hole ex-tending the shortest way through
the projection. ~y forming the projection in this manner suf-
ficient material abou-t the transverse hole is ensured without
necessitating penetration of particularly massive wall por-
tions. - - -
By letting the hole according to the invention extend
obliquely through the projection, it is possible to secure the
trimming by means of a drawing pin, a nail, a safety pin or
by sewing it on.
In this case the advantage is obtained that the hole may
according to the invention extend from an ob]ique end surface
of the projection, said surface being at right angles to the
axis of the hole.
Moreover according to the invention the end surface of
the projection may be planar with rounded edges, thus provid-
ing good rest for the head of a drawing pin or a nail, whether
there is a hole or not in the projection, and simultaneously
sharp edges are avoided which might collect dirt during the
capping operation.
Furthermore according to the invention -the hole may be a
small depression in the free end of the projection in order
that the latter may cooperate with a drawing pin or a nail,
the depression thereby catching the point of the securing means
and carrying said point in-to the solid portions of the pro-
jection.
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~.~4~68
Besides, the end of the projection may according to the
invention be formed as a`funnel shaped depression ending in a
hole as narrow as a pinhole. This depression possesses parti-
cularly good possibili-t.ies of catching -the point of the secu-
ring means and of carrying the point through the hole down in-
to the solid portions of the projection.
According to a special embodiment of -the invention the
projection may comprise a thick, solid portion at its base~
and the depression may extend into an axial hole adjacent said
.solid portion.
In order to make the projection press very resiliently
against the leg of thc drawing pin, thus facilita-ting the in-
troduction of said pin, -the projection may according to the
invention be provided with a plurality of radial slits extend-
ing from -the depression and -the outermost por-tion of the hole.
According to another embodimen-t of the insert the hole
may according to the invention comprise an oblique extension
leading through the side of the projecti.on, and an enlargement
in the side of the mou-th of the hole at the end surface of the
projection, said enlargement being coaxial with the extension.
By means of a hole thus formed the lower solid portion of the
projection may be used for cooperation with the securing means,
or the button may be sewed on a piece of fabric, e.g. a gar-
ment.
If beyond the above advantages it is desired to make the
projection with a minimum of material, the cross section may
according to the invention decrease toward.s its free end por-
16D48968
tion.
According to another material-saving embodiment of the
invention the projection may have the shape of a truncated
conical body with an elliptical normal section. This implies
a particularly short hole to be drilled since -the hole may
follow the conjugated axis of one of the cross-sectional el-
lipses.
Moreover according to -the invention the height of the pro-
- jection may be somewhat larger tnan the length of a dra~-ing
pin. The drawing pin will then penetrate the main part of the
solid bottom portion before the trimming is firmly secured.
In order to protect the projection against scratches from
the edge of other sealing caps when a large number of caps
with inserts are situated in a common container in a capping
machine, the inserts of the caps have been provided with a cy-
lindrical sleeve sealing at the interior surface of the bottle-
neck. If it is desired to use an insert with such a sleeve the
sleeve should according to the invention be less projecting
than the projection, since the hole in the projection may
thereby be arranged in such manner that the sleeve does not
get in the way of the needle wnen the button is to be sewed
on a piece of fabric.
The insert may according to the invention be formed in
such manner that the projection comprises both a central de-
pression in its free end surface and a transverse hole. The
depression or the transverse hole may then, as occasion re-
quires, be used depending on the securing means available.
-- 6
lQ~8968
The projection according to the invention may also be
formed in such manner that it comprises both a central longi-
tudinal hole and a transverse hole, both offering the same ad-
vantages.
Besides, the cross section of the longitudinal hole may
according to the invention be out of round, such as oval,
rectangular, rhombical or clover-leaf shaped, and the trans-
verse hole may extend in or adjacent the thinnest wall por-
tions of the longitudinal hole. The unrounded form provides
the wall of the longitudinal hole with various thicknesses,
and the above situating of the transverse hole renders it pos-
sible to make the transverse hole in the shortest possible
time.
Moreover, the longitudinal hole needs not have the same
cross section all over its length, but may according to the
invention in addition to a very narrow inner portion comprise
a wider conical portion with for instance a star-shaped cross
section towards the free end of the projection, and the trans-
verse hole may then cross said conical hole portion. By making
the longitudinal hole wider towards the free end of -the pro-
jection it is ensured -that the hole easier catches the drawing
pin or the nail, if the trimming is -to be secured by such a
securing means, and simultaneously thin portions are formed
in the wall of the longitudinal hole through which the trans-
verse hole may be carried.
The transverse hole in the projection may be manufactured
by moulding, but it is more inexpensive and quicker to produce
the transverse hole by pressing the material out of the pro-
1~4~3968
jection by means of a small punch or a blanking die.
A preferred rnethod of making the transverse hole in the
pro~ection of the plastic insert is according to the invention
to use a cannula, since this tool will remove only so much ma~
terial that a needle with a thread may be carried through the
hole.
Furthermore according -to the invention it would be an ad-
vantage to use a cannula obliquely cut at its end for the ma-
nufacture of the transverse hole, the cutting edge of the can-
nula not only pressing against the material, but also cutting
its way through said material. ~uch a cannula is not worn so
much as a cannula having its edge situated in a normal section.
The quickest way of producing the transverse hole is ac-
cording to the invention by cutting the hole by means of a
helically moved calmula. The cutting edge of such a can1~ula
will be cut rather than pressed through the material. The plug
cut out of the material by the cannula will neither fall out
of the cannula af-ter drilling nor stick to a short burr along
the outlet edge of the hole as in the previous two cases, but
2~ will be retained completely in the cavity of the cannula. Thus
the plug is prevented from following the insert and later on
from being washed into the liquid or the paste in the container.
The transverse hole in the proJection may according to the
invention be cut or drilled with a cannula situated in one of
the mould portions before the mould is opened after casting of
the insert. Thus it is rendered possible to remove a finished
insert from the mould.
-- 8
~4896~
According to the invention the same is obtainable if the
transverse hole of the projection is cut or drilled by means
of a cannula after the mou]d upon casting has been opened so
as to permit exposure of part of the projection, the projec-
tion itself not being disengaged from any of the mould por-
tions. The cannula may then be introduced into the gap between
the mould portions in order to perform the hole cutting, while
the projection is still in the mould. By this method the burrs
may be removed from the drilling point.
The most advantageous method of making the transverse
hole is according to the invention to produce the transverse
hole outside the mould so that the mould will not be occupied
during the operation period. According to the invention the
transverse hole may be drilled while the insert is pressed on-
to a stand on a conveyor, the insert being for instance also
provided with coloured imprints with information or decoration
when resting on said stand, said conveyor also supporting a
holder with a bearing for a chuck holding the cannula, the
rotary movement to the cannula being transmitted through a
friction pulley arranged on said chuck, said friction pulley
cooperating with a friction chute, the axial movement of the
cannula being provided by a curved guide pressing against the
free end of the chuck and a counter spring as the conveyor is
passing along the guide.
As mentioned above it is practical to support the cannu-
la within the mould during the production of the transverse
hole, and according -to the invention the mould may comprise
1~4E~68
two coaxial holes the first of which being situated adjacent
the projectlon of the insert and ha~ing a diameter correspond-
ing to the cross section of the cam~ula, said first hole sup-
porting the cannula during its introduction, and the second
hole opposite the first hole, the wall of said second hole ser-a
ving as a support for the cannula.
Finally according to the invention the inlet hole may
have a diameter being somewhat larger9 approximately 0.04 mm,
than the outer diameter of the cannula, and the outlet hole
may have a diameter being still a little larger, approximately
0.1 mm. These measures of the holes in the mould will of:Eer
good support for the cannula, and i-t is possible with one and
the same cannula to drill a very large number of holes before
the cannula is to be sharpened. The drilling operation requires
only 1 sec.
Some embodiments of the plastic insert according to the
invention will be described below with reference to the accom-
panying drawings in which
Fig. 1 is a sectional view -through a Crown Cork with an
insert situated on the beaded mouth of a bottle,
Fig. 2 is a plan view of the removed insert,
Fig. 3 is a plan view of the insert of Fig. 2 bearing an
imprint,
Fig. 4 is a perspective view ol another insert,
Fig. 5 is on a larger scale a sectional view through
another insert,
Fig. 6 is on a larger scale a sectional view through a
-- 10
1~4896~3
third insert,
Fig. 7 is an end view of the projec-tion of the insert of
Fig. 6,
Figs. 8 to 10 are end views through other inserts,
Figs. 11 and 12 are perspective views of parts of othe~
inserts,
Fig. 13 is a sectional view through a further inser-t,
Fig. 14 is a sectional view through a further insert,
Figs. 15 to 19 are sectional views through various in-
serts taken along the line 15-15 of Fig. 14,
Fig. 20 is a longitudinal view through a further insert,
Fig. 21 is a cross section taken along the line 21-21 of
Fig. 20,
Fig. 22 is on a smaller scale an end view of a conveyor
with drilling tool,
Fig. 23 is a plan view of the conveyor of Fig. 22 wi~h
more tools,
Fig. 24 is a sec-tional view through parts of a mould, and
Fig. 25 is a sectional view through parts of another
mould.
Fig. l illustrates a Crown Cork secured to the mouth 26
of a container. The Crown Cork comprises an outer metallic
portion 27 and an inner insert 28 of plastics. The inser-t com-
prises an upper plate or shield 29, a circular tightening sleeve
30 directed inwards J and a central projec-tion 31 also directed
inwards.
This projection 31 is somewhat longer than the h~ight of
-- 11 --
.. . . . . . . . . .
1~48968
the sleeve 30, and in the embodiment of the insert illustrated
in Fig. 1 the projection 31 has in its free planar end sur-
face 33 a small hole, being only a depression 32. This
depression may cooperate with a drawing pin 35, Fig. 5, to be
fixed t,o the inser-t.
In this manner the insert prcvided with an imprint 38, Fig.
3, may be secured to a piece of fabric 39 such as a blouse or a
shirt, thus serving as a trimming or an emblem, Fig. 5. This fi-
figure shows a projection 31, which has a longer hole 34. In
Fig. 4 an insert is shown having the depression 32 situated on
the side of the pro~ection 31 near the end face ~3 of the latter~
Radial slits ~0, Figs. 6 and 7, may extend from the por-
tion of -the hole 34 adjacent the free end of the projection 31,
whereby the insert will be capable of catching the drawing pin
35' the leg 36 of which is somewhat longer than the hole 6.
These slits will also cooperate in catching the leg 36 of the
pin and lead it down into the lower portion of the hole 34,
- from where the point of the leg will penetrate further into the
solid projection portion 37.
The inserts illustrated in Figs. 8 and 9 comprise an ob-
lique through hole 41 extending from a planar part 76 of the
side wall of the projection 31 or extending from the planar
end 75 of same, which hole 41 may be used for securing either
with-a drawing pin or a nail or with a thread 42, Fig. 14,
drawn through the hole by means of a needle and sewn on a
piece of fabric 43, as illustrated in Fig. 14.
The hole of the insert illustrated in Fig. 10 is divided
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1~48~6~
into a central portion 44 and an oblique narrow portion 45 for
cooperation with the drawing pin and the needle respectively.
This hole thereby comprises a transverse surface 46, through
which the leg 36 may penetrate into the solid portion 37 of
the projection.
As shown in Fig. 11 the projection 31 may be formed as a
; . . ....
cube, and the transverse hole 47 may be rectangular and manu-
factured by means of a correspondingly formed blanking die
punch or recessing tool.
Fig. 12 shows a laminar projection 31, and the transverse
hole 48 may be cast.
The insert illustrated in Fig. 14 comprises a conical
projection 49 having an oval cross section, cf. Fig. 15, and
a central hole 50 in addition to the transverse hole, through
which the thread 47 is carried. As occasion requires, the''--''
hole 51 may be used for the securing of the insert to the
blouse 43, as illustrated in Fig. 14, or the longitudinal hole
50 may be used by introducing a drawing pin 35, cf. Fig. 5,
or a nail until the point of the drawing pin is pressed firm~
ly into the very thick bottom 37 of the hole 50.
Fig. 16 shows a cross-sectional view through a projection
49 comprising an oval longitudinal hole 50 and a transverse
hole 51 extending through the thinnest portions of the wall
of the longitudinal hole.
Fig. 17 also illustrates a cross~sectional view of the
embodiment of Fig. 16 wherein the cross section of the longi-
tudinal hole 50 is rectangular.
1~8~6~
In Figs. 18 and 19 the cross section of -the longitudinal
hole 50 is rhombical and clover-leaf shaped respectively9 and
the transverse hole 51 is carried through the thinnest wall
portions of the projection 31.
Fig. 20 shows a longitudinal view through a projection 31,
the middle hole 50 of which enlarging towards the free outer
end of the projection, and Fig. 21 shows that the enlarged por-
tion 52 of the hole 50 is star-shaped, and that the transverse
hole 51 is carried through some of the thinnest portions of
the projection wall of the cross section in question.
Figs. 22 and 23 illustrate how the transverse hole may be
drilled into the cap insert 28 while the inserts are transpor
ted from the casting machine to -the place where they are to be
assembled with the metallic portions 27, Fig. 1, of the Crown
Cork and where the bottles for instance are applied with caps.
During the above transport the top side of the inserts
may be provided with the previously mentioned imprints 38, cf.
Fig. 3.
The conveyor comprises a plurality of blocks 53 mutually
connected by chain links 5L drawn forwardly Gn some L-shaped
slide bars 55, Fig. 22.
Each block 53 carries a stand 56 catching its insert 28
from some overhead bars, not shown, whereupon the insert is
firmly pressed onto the stand 56 during the movement of said
stand. The stand comprises a first hole 77 and a coaxial second
hole 57 into which a rotating cannula 58 is introduced and
drills through the projection 31 of the insert.
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1(~489~8
The rotation of the cannula is prGvided by means of a ro-
tating chuck 59 in which it is secured. This chuck 59 may ro-
tate in a bushing 60 in a stock 61 on the block 53.
The chuck 59 carries a friction wheel 62 driving on a
friction chute 63 during the transport, whereby the cannula 58
is rotated.
The feed of the cannula is achieved by means of a curved
guide 64 pressing against the free end of the chuck 59. The
curved guide 64 is formed in such a manner that the cannula is
introduced into the hole 77 at an axial speed suitable relative
to its rotation. After the drilling operation the cannula 58
travels into -the second hole 57 and is then carried back to
its starting position influenced by a pressure spring 65 si-
- tuated around the chuck 59.
Fig. 24 is a vertical sectional view through portions 66
and 67 of a mould for the manufacture of an insert. When the
core 68 of the mould has been removed from the cast body a can-
nula 69 is introduced into the mould portions 67 for penetra-
tion of the projection 31 of the subject. During this penetra-
tion the cannula is carried in-to drilling holes 70 and 71.
Fig. 25 illustrates a corresponding sectional view through
a mould. The portions 72 and 73 of the mould are easily opened
from each other without the subject falling out, and simulta-
neously the core 68 is removed from -the insert.
In this position a cannula 74 may be introduced between
the mould portions and penetrate the projection 31 of the in-
sert.
- 15
968
The holes 77, 57, 70 and 71 serve for the control o.f the
cannula during the drilling of the projection for which rea-
son the cannula must have a running fit in these holes, and
consequently, the diame-ter of the inlet hole may be 0.04 mm
larger than the outer diameter of the cannula, and the diame-
ter of the outlet hole may be 0.1 mm larger than the diame-ter
of the calmula.
As previously mentioned, the insert may be provided with
an imprint 38, cf. Fig. 3, on its top side, i.e. on the side
facing the metallic portion of the Crown Cork. This imprin~
provides the insert with a characteris~ic look relative to
other groups of inserts, and fur-thermore it ~ay contain infor-
mation.
Instead of an imprint the shield 29, Fig. 1, of the cap
may carry an outer imprint or a decoration, preferably in va-
rious colours.
Besides, the insert may be adapted to be used as a trim-
ming without being removed from the metallic portion 27, cf.
Fig. 1. Then the imprint must only be made on the outside of
the metallic portion 27.
- 16
